package main

import (
	"fmt"
)

func main() {
	l0 := []int{1, 3, 5, 7}
	l1 := []int{10, 11, 16, 20}
	l2 := []int{23, 30, 34, 60}
	var s [][]int
	s = append(s, l0)
	s = append(s, l1)
	s = append(s, l2)
	fmt.Println(searchMatrix(s, 13))
}
